7Semi DS3502 I2C Digital 10K Potentiometer Breakout

The 7Semi DS3502 I2C Digital 10K Potentiometer Breakout is a digitally controlled variable resistor module based on the DS3502 IC. It provides a 10KΩ linear-taper potentiometer that can be adjusted through an I²C interface, allowing precise resistance control via microcontrollers. The module offers 128 wiper positions for fine-tuning and maintains its set value in non-volatile memory, ensuring it retains settings after power-off. Compact and easy to interface, it is ideal for applications requiring adjustable voltage, gain control, or brightness tuning without using mechanical potentiometers.

Technical Specifications:

• IC: DS3502 Digital Potentiometer
  
• Interface: I²C (2-wire serial communication)
  
• Resistance Value: 10KΩ nominal
  
• Wiper Positions: 128 steps (0–127)
  
• Resistance Tolerance: ±20% typical
  
• Wiper Resistance: 400Ω typical
  
• Supply Voltage (VDD): 2.7V to 5.5V
  
• I²C Address: 0x28 (default)
  
• Non-Volatile Memory: Retains last wiper setting after power-off
  
• Current Through Wiper: Maximum 2.5mA
  
• Operating Temperature: -40°C to +125°C
  
• Logic Level Compatibility: 3.3V and 5V systems
  
• PCB Type: Compact breakout board with 2.54mm header pins
  

Features:

• Digitally adjustable 10KΩ potentiometer controlled via I²C
  
• 128-step wiper position for precise analog adjustment
  
• Non-volatile memory stores last resistance setting
  
• Wide operating voltage compatible with 3.3V and 5V systems
  
• Easy integration with Arduino, ESP32, STM32, and Raspberry Pi
  
• Eliminates wear and drift associated with mechanical potentiometers
  
• Low power consumption for battery-based applications
  
• Simple I²C interface with configurable address options
  
• Compact PCB for easy prototyping and embedded integration
  
• Ideal for automatic gain, brightness, or voltage control systems

Applications:

• Digital volume, brightness, or contrast control circuits
  
• Adjustable voltage dividers and signal conditioning systems
  
• Sensor calibration and offset adjustment in analog circuits
  
• Gain control in amplifiers and filters
  
• Industrial automation and process tuning applications
  
• Embedded system parameter adjustment
  
• Audio systems and power supply calibration
  
• IoT devices requiring programmable analog control
  
• Educational and prototyping electronics projects
  
• Replacing traditional potentiometers in digital control environments